Yoshihide Ishii

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ballpoint pen
- Patent number 9,533,528
- Issue date Jan 3, 2017
- Mitsubishi Pencil Company, Limited
- Yoshihisa Osano
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Ballpoint pen tip, ballpoint pen refill, and ballpoint pen
- Patent number 9,056,518
- Issue date Jun 16, 2015
- Mitsubishi Pencil Company, Limited
- Yoshihide Ishii
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Ballpoint pen tip, ballpoint pen refill, ballpoint pen, and method...
- Patent number 8,714,856
- Issue date May 6, 2014
- Mitsubishi Pencil Company, Limited
- Yoshihide Ishii
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Grant
Writing instrument and welding method of writing point assembly and...
- Patent number 7,303,351
- Issue date Dec 4, 2007
- Mitsubishi Pencil Kabushiki Kaisha
- Kazuhiko Furukawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
BALLPOINT PEN
- Publication number 20150078803
- Publication date Mar 19, 2015
- MITSUBISHI PENCIL COMPANY, LIMITED
- Yoshihisa Osano
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
BALLPOINT PEN TIP, BALLPOINT PEN REFILL, AND BALLPOINT PEN
- Publication number 20120328356
- Publication date Dec 27, 2012
- MITSUBISHI PENCIL COMPANY LIMITED
- Yoshihide Ishii
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
BALLPOINT PEN TIP, BALLPOINT PEN REFILL, BALLPOINT PEN, AND METHOD...
- Publication number 20120039663
- Publication date Feb 16, 2012
- Mitsubishi Pencil Co., Ltd.
- Yoshihide Ishii
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
Information Patent Application
Writing instrument and welding method of writing point assembly and...
- Publication number 20050074274
- Publication date Apr 7, 2005
- Kazuhiko Furukawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES